Commit f18f9811 authored by Jamie Iles's avatar Jamie Iles Committed by Alexandre Belloni
Browse files

i3c: fix incorrect address slot lookup on 64-bit 



The address slot bitmap is an array of unsigned long's which are the
same size as an int on 32-bit platforms but not 64-bit.  Loading the
bitmap into an int could result in the incorrect status being returned
for a slot and slots being reported as the wrong status.

Fixes: 3a379bbc ("i3c: Add core I3C infrastructure")
Cc: Boris Brezillon <bbrezillon@kernel.org>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: default avatarJamie Iles <quic_jiles@quicinc.com>
Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20210922165600.179394-1-quic_jiles@quicinc.com
parent 313ece22

drivers/i3c/master.c

+2 −1
Original line number Diff line number Diff line
@@ -343,7 +343,8 @@ struct bus_type i3c_bus_type = { 
static enum i3c_addr_slot_status

i3c_bus_get_addr_slot_status(struct i3c_bus *bus, u16 addr)

{

	int status, bitpos = addr * 2;

	unsigned long status;

	int bitpos = addr * 2;



	if (addr > I2C_MAX_ADDR)

		return I3C_ADDR_SLOT_RSVD;